Ranger RCI-2985DX, User Manual

Page: 21 / 66

RCI-2985
DX
RCI-2995
DX
CHAPTER 6
ALIGNMENT
- 21 -
6.0 REQUIRED TEST EQUIPMENT
AC Power Supply (110V AC)
RF Wattmeter
Multimeter
Automatic Modulation Meter
Audio Signal Generator Frequency Counter (100 MHz)
RF Signal Generator (100 MHz)
Automatic Distortion Meter
Oscilloscope (50 MHz)
Sinad Meter
6.1 ALIGNMENT PROCEDURES
This transceiver has been aligned at the factory and does not require any adjustments at installation. The
required test equipment listed are used for the test setup or alignment shown in Figure 6-1 Transmitter
Test Setup and Figure 6-2 Receiver Test Setup. These test setups are used in part or total during the
following adjustments and refer to Page 59 for adjustment location.
6.1.1 PLL ALIGNMENT
ITEM U.U.T. SETTING ADJUST
POINT
MEASUREMENT
PLL 2
VCO Voltage Set radio to 24.890 MHz, AM RX mode.
Frequency setting at 29.699 MHz.
Connect Multimeter to TP10. L14
1.0 VDC
±
0.1
≤
4.5 VDC
PLL 1
VCO Voltage Set radio to 24.890 MHz, AM RX mode.
Frequency setting at 29.699 MHz.
Connect Multimeter to TP11. L13
1.0 VDC
±
0.1
≤
6.5 VDC
AM Frequency Set radio to AM RX mode.
Set Clarifier Control to 12 o’clock.
Connect Frequency Counter to TP16.
VC2
10.100 MHz
±
10 Hz
TX Frequency Set radio to AM TX mode.
Connect Frequency Counter to TP16. VR8
10.100 MHz
±
10 Hz
VCO Output Set radio to 28.000 MHz, AM RX mode.
Connect Oscilloscope to TP3. L17 Maximum Output
38.6950 MHz.
AM OSC Set radio to AM TX mode. Mod off
Connect Frequency Counter to TP5. L18
10.6950 MHz
±
10
Hz
USB OSC Set radio to USB TX mode. Mod off.
Connect Frequency Counter to TP5. L20
10.6975 MHz
±
10
Hz
LSB OSC Set radio to LSB TX mode. Mod off.
Connect Frequency Counter to TP5. L19
10.6925 MHz
±
10
Hz
6.1.2 TRANSMITTER ALIGNMENT